<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>

.solarsys{
  width: 800px;
  height: 800px;;
  position: relative;
  margin: 0 auto;
  background-color: black;
  border-radius: 50%;
  padding: 0;
  transform: scale(1);
}

/*太阳*/
.sun {
  left:357px;
  top:357px;
  height: 90px;
  width: 90px;
  background-color: rgb(248,107,35);
  border-radius: 50%;
  box-shadow: 5px 5px 10px rgb(248,107,35), -5px -5px 10px rgb(248,107,35), 5px -5px 10px rgb(248,107,35), -5px 5px 10px rgb(248,107,35);
  position: absolute;
  margin: 0;
}

/*水星*/
.mercury {
  left:337.5px;
  top:395px;
  height: 10px;
  width: 10px;
  background-color: rgb(166,138,56);
  border-radius: 50%;
  position: absolute;
  transform-origin: 62.5px 5px;
  animation: rotate 1.5s infinite linear;
}

/*水星轨道*/
.mercuryOrbit {
  left:342.5px;
  top:342.5px;
  height: 115px;
  width: 115px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  margin: 0px;
  padding: 0px;
}

/*金星*/
.venus {
  left:309px;
  top:389px;
  height: 22px;
  width: 22px;
  background-color: rgb(246,157,97);
  border-radius: 50%;
  position: absolute;
  transform-origin: 91px 11px;
  animation: rotate 3.84s infinite linear;
}

/*金星轨道*/
.venusOrbit {
  left:320px;
  top:320px;
  height: 160px;
  width: 160px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

/*地球*/
.earth {
  left:266.5px;
  top:391px;
  height: 18px;
  width: 18px;
  background-color: rgb(115,114,174);
  border-radius: 50%;
  position: absolute;
  transform-origin: 134px 9px;
  animation: rotate 6.25s infinite linear;
}

/*地球轨道*/
.earthOrbit {
  left:275px;
  top:275px;
  height: 250px;
  width: 250px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

/*火星*/
.mars {
  left:222.5px;
  top:392.5px;
  height: 15px;
  width: 15px;
  background-color: rgb(140,119,63);
  border-radius: 50%;
  position: absolute;
  transform-origin: 177.5px 7.5px;
  animation: rotate 11.75s infinite linear;
}

/*火星轨道*/
.marsOrbit {
  left:230px;
  top:230px;
  height: 340px;
  width: 340px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

/*木星*/
.jupiter {
  left:134px;
  top:379px;
  height: 42px;
  width: 42px;
  background-color: rgb(156,164,143);
  border-radius: 50%;
  position: absolute;
  transform-origin: 266px 21px;
  animation: rotate 50s infinite linear;
}

/*木星轨道*/
.jupiterOrbit {
  left:155px;
  top:155px;
  height: 490px;
  width: 490px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

/*土星*/
.saturn {
  left:92px;
  top:387px;
  height: 26px;
  width: 26px;
  background-color: rgb(215,171,68);
  border-radius: 50%;
  position: absolute;
  transform-origin: 308px 13px;
  animation: rotate 100s infinite linear;
}

/*土星轨道*/
.saturnOrbit {
  left:105px;
  top:105px;
  height: 590px;
  width: 590px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

/*天王星*/
.uranus {
  left:41.5px;
  top:386.5px;
  height: 27px;
  width: 27px;
  background-color: rgb(164,192,206);
  border-radius: 50%;
  position: absolute;
  transform-origin: 358.5px 13.5px;
  animation: rotate 120s infinite linear;
}

/*天王星轨道*/
.uranusOrbit {
  left:55px;
  top:55px;
  height: 690px;
  width: 690px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

/*海王星*/
.neptune {
  left:10px;
  top:390px;
  height: 20px;
  width: 20px;
  background-color: rgb(133,136,180);
  border-radius: 50%;
  position: absolute;
  transform-origin: 390px 10px;
  animation: rotate 250s infinite linear;
}

/*海王星轨道*/
.neptuneOrbit {
  left:20px;
  top:20px;
  height: 760px;
  width: 760px;
  background-color: transparent;
  border-radius: 50%;
  border-style: dashed;
  border-color: gray;
  position: absolute;
  border-width: 1px;
  /*margin: 100px;*/
  /*transform-origin: -75px -75px;*/
  /*animation: rotate 4s infinite linear;*/
  margin: 0px;
  padding: 0px;
}

@keyframes rotate {
  100% {
    transform: rotate(-360deg);
  }
}

    </style>

</head>
<body>
    <div class="solarsys">
        <!--太阳-->
        <div class='sun'></div>
      
        <!--水星轨道-->
        <div class='mercuryOrbit'></div>
      
        <!--水星-->
        <div class='mercury'></div>
      
        <!--金星轨道-->
        <div class='venusOrbit'></div>
      
        <!--金星-->
        <div class='venus'></div>
      
        <!--地球轨道-->
        <div class='earthOrbit'></div>
      
        <!--地球-->
        <div class='earth'></div>
      
        <!--火星轨道-->
        <div class='marsOrbit'></div>
      
        <!--火星-->
        <div class='mars'></div>
      
        <!--木星轨道-->
        <div class='jupiterOrbit'></div>
      
        <!--木星-->
        <div class='jupiter'></div>
      
        <!--土星轨道-->
        <div class='saturnOrbit'></div>
      
        <!--土星-->
        <div class='saturn'></div>
      
        <!--天王星轨道-->
        <div class='uranusOrbit'></div>
      
        <!--天王星-->
        <div class='uranus'></div>
      
        <!--海王星轨道-->
        <div class='neptuneOrbit'></div>
      
        <!--海王星-->
        <div class='neptune'></div>
      </div>
</body>
</html>